[MarkR]

Hi,
I have drawn a diagram of my waste water layout for my 60 Tradewind and was hoping for some feed back. My specific questions/worries:

Can I vent only the tanks and not each fixture (like the diagram shows) (and if I should vent each fixture and don't, what will be the consequence)?

Can the Black and Gray Tank vents join together (like the diagram shows)?

And lastly, are there any issues/problems anyone sees with this layout.
Thanks for your help.
MarkR